CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 296 · 40 questions

Code tip (Dot for class, hash for id): p matches every <p>; .note matches class="note"; #top matches id="top". A dot means class, a hash means id — mixing them up matches nothing. Many elements can share a class; an id belongs to only one element.

1. 1.True or false: h1 is an id selector. (a) True (b) False
2. 2.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
3. 3.🎯 Which sign starts a class selector? (a) @ (b) . (c) & (d) #
4. 4.🎯 Can many elements share the same class? (a) No (b) Yes
5. 5.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
6. 6.🎯 Which element does the selector div style? (a) <p class="note"> (b) <span> (c) <div class="note"> (d) <h1 id="top">
7. 7.True or false: #end is a class selector. (a) False (b) True
8. 8.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <h1> (c) <p class="star"> (d) <li id="top">
9. 9.🎯 Which element does the selector .big style? (a) <div class="big"> (b) <div class="red"> (c) <span class="box"> (d) <div id="big">
10. 10.True or false: body is an id selector. (a) True (b) False
11. 11.🎯 Which element does the selector #intro style? (a) <div id="main"> (b) <div class="intro"> (c) <span class="menu"> (d) <div id="intro">
12. 12.🎯 Which element does the selector .note style? (a) <p class="note"> (b) <h1 class="red"> (c) <p class="big"> (d) <p id="note">
13. 13.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
14. 14.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
15. 15.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) #red (b) #end (c) .logo (d) li
16. 16.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p> (a) .hero (b) .menu (c) h1 (d) #hero
17. 17.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) #box (b) p (c) h1 (d) .end
18. 18.True or false: #end is an id selector. (a) True (b) False
19. 19.🎯 Which element does the selector #logo style? (a) <div class="menu"> (b) <li id="end"> (c) <li class="logo"> (d) <li id="logo">
20. 20.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) .note (b) #logo (c) span (d) #note
21. 21.True or false: .star is an element selector. (a) True (b) False
22. 22.True or false: .note is an id selector. (a) False (b) True
23. 23.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <p class="star"> (c) <span class="box"> (d) <span class="red">
24. 24.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) .top (b) #intro (c) span (d) p
25. 25.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) div (b) .red (c) .intro (d) li
26. 26.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
27. 27.🎯 Which element does the selector div style? (a) <p class="menu"> (b) <h1 id="hero"> (c) <span> (d) <div class="menu">
28. 28.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) #star (b) .main (c) .menu (d) .star
30. 30.🎯 Which element does the selector .star style? (a) <h2 class="menu"> (b) <li class="note"> (c) <h2 class="star"> (d) <h2 id="star">
31. 31.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
32. 32.🎯 Which element does the selector li style? (a) <p id="top"> (b) <li class="big"> (c) <span class="big"> (d) <div>
33. 33.🎯 Which element does the selector #intro style? (a) <p id="main"> (b) <p class="intro"> (c) <p id="intro"> (d) <h1 class="big">
34. 34.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <span class="big"> (c) <p> (d) <h1 class="big">
35. 35.🎯 Which CSS selector matches this element?
    <li class="star" id="end">Hello</li> (a) #end (b) .end (c) .menu (d) #star
36. 36.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) #top (b) .note (c) #menu (d) .menu
37. 37.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
38. 38.True or false: p is an id selector. (a) False (b) True
39. 39.True or false: h1 is an element selector. (a) False (b) True
40. 40.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector

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